I remember the JW friends really blasting the holiday as a devil worshipping holiday, but then they blasted all holidays as devil worshipping. At least they were consistent.
It's the other fundementalist type religions who started to make a big deal about celebrating Halloween being evil that caught my attention. They made news out of trying to get it out of the schools and other city or state run functions. They also claimed it was a devil worshipping holiday. This year was interesting because a lot of local churches tried to stop trick-or-treating on Sunday. They wanted it moved to Saturday or banned altogether. Their reason? Sunday is for church and God and not devil worshipping practices.
I find it interesting (and hypocritical) that the same people who regard one holiday combining pagan and Christian practices as a Christian worship holiday, condemn another holiday combining pagan and Christian practices as a devil-worshipping holiday.